虽然这部经典老片在1998年首映，但当它本月重新上映时，依然在影迷中引起了极大的反响。(release)

Although this classic film was first released in 1998, it still generated / aroused / caused a huge response / feedback among fans when it was re-released this month.

考查时态，让步状语从句，时间状语从句和动词。整句描述过去的事情，用一般过去时，“虽然这部经典老片在1998年首映” 用Although引导的让步状语从句，“这部经典老片” 译为this classic film，“上映” 用动词release，和主语之间是被动关系，用被动语态，所以前半句译为Although this classic filmwas first released in 1998，“但当它本月重新上映时” 用when引导的时间状语从句，“重新上映” 用动词re-release，所以时间状语从句译为when it was re-released this month，“引起极大的反响” 译为generate / arouse / cause a huge response / feedback，“在影迷中” 译为among fans，所以主句译为it still generated / aroused / caused a huge response / feedback among fans。故整句翻译为：“Although this classic filmwas first released in 1998, it still generated / aroused / caused a huge response / feedback among fans when it was re-released this month.”。